Packet loss and high latency

Hi,

I am suffering from dropped internet game connections and lag spikes and in order to diagnose, I have used my always on ARM computer to take measurements of the connection quality and graph them with Smokeping.

I see latency up to 3s for pings and significant amounts of packet loss. Both local devices are plugged into ports on the netgear router itself, there is no packet loss to the Drobo (first pic), 10% max packet loss to the router, 13% max packet loss to the remote gateway.

These figures from the cable stats page on the router look fine to me, but it looks as though most of the packet loss can be correlated to problems with the CG3000DCR.

Is "Residential Gateway" mode correct?

Initialization Procedure

Vendor Name	Netgear
Hardware Version	1.04
Serial Number	2BR23CWJ06982
Firmware Version	V3.01.04
Operating Mode	Residential Gateway
System Uptime	5 days 13h:45m:46s
Date	12 - 22 - 2014
Time	10:40:43

Downstream Channel

Downstream Frequency	597000000 Hz	561000000 Hz	567000000 Hz	573000000 Hz	579000000 Hz	585000000 Hz	591000000 Hz	603000000 Hz
Lock Status	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
Modulation	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM
Symbol Rate	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec	5.360537 Msym/sec
Downstream Power	6.5 dBmV	6.8 dBmV	6.5 dBmV	6.2 dBmV	5.7 dBmV	5.6 dBmV	6.5 dBmV	6.2 dBmV
SNR	41.4 dBmV	41.9 dBmV	41.8 dBmV	41.4 dBmV	41.4 dBmV	41.4 dBmV	41.6 dBmV	41.3 dBmV

Upstream Channel

Upstream Frequency	21400000 Hz	27800000 Hz	34400000 Hz	39200000 Hz
Lock Status	Locked	Locked	Locked	Locked
Modulation	ATDMA	ATDMA	ATDMA	ATDMA
Symbol Rate	5120 sym/sec	5120 sym/sec	5120 sym/sec	2560 sym/sec
Upstream Power	41.5 dBmV	42.2 dBmV	42.7 dBmV	43.0 dBmV

Router is Netgear CG3000DCR

3 connections at rear: 1) Airport Extreme wifi 2) ARM computer 3) Drobo

I have the Udoo set up to ping the Drobo, the Gateway IP, the Remote Gateway IP and several other hops using Smokeping.

Drobo:

Router at home:

Remote gateway:

Responses

faye

Visitor

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3 Messages

10 years ago

Here's a speedtest I ran that shows how much of a problem this is:

Each trough is a failed multiplayer game or 4k netflix stream.

0

train_wreck

Gold Problem solver

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610 Messages

10 years ago

so, interesting to hear you are having very similar problems as had been pointed out in this large thread:

http://forums.businesshelp.comcast.com/t5/Equipment-Modems-Gateways/COMCAST-Serious-Problems-with-all-Netgear-CG3000DCR-Gateway/td-p/5400/jump-to/first-unread-message

Like many there, replacing the gateway fixed the issue immediately. I will say I saw almost the same kind of thing you did.

Good to know. I will continue avoiding the Netgear.

0

faye

Visitor

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3 Messages

10 years ago

Well, I wish I had done this months ago. I bought a Motorola SB6121. That Netgear is a terrible piece of kit. I'm going to be taking it back to Comcast and telling them to please not inflict it on anyone else. My network -- even my HOME network is like night and day since changing the router. I can actually reliably use it.

0